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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/cpuidle/cpuidle-clps711x.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/cpuidle/cpuidle-clps711x.c')
-rw-r--r--kernel/drivers/cpuidle/cpuidle-clps711x.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/kernel/drivers/cpuidle/cpuidle-clps711x.c b/kernel/drivers/cpuidle/cpuidle-clps711x.c
new file mode 100644
index 000000000..18a7f7380
--- /dev/null
+++ b/kernel/drivers/cpuidle/cpuidle-clps711x.c
@@ -0,0 +1,63 @@
+/*
+ * CLPS711X CPU idle driver
+ *
+ * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#define CLPS711X_CPUIDLE_NAME "clps711x-cpuidle"
+
+static void __iomem *clps711x_halt;
+
+static int clps711x_cpuidle_halt(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
+{
+ writel(0xaa, clps711x_halt);
+
+ return index;
+}
+
+static struct cpuidle_driver clps711x_idle_driver = {
+ .name = CLPS711X_CPUIDLE_NAME,
+ .owner = THIS_MODULE,
+ .states[0] = {
+ .name = "HALT",
+ .desc = "CLPS711X HALT",
+ .enter = clps711x_cpuidle_halt,
+ .exit_latency = 1,
+ },
+ .state_count = 1,
+};
+
+static int __init clps711x_cpuidle_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ clps711x_halt = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(clps711x_halt))
+ return PTR_ERR(clps711x_halt);
+
+ return cpuidle_register(&clps711x_idle_driver, NULL);
+}
+
+static struct platform_driver clps711x_cpuidle_driver = {
+ .driver = {
+ .name = CLPS711X_CPUIDLE_NAME,
+ },
+};
+module_platform_driver_probe(clps711x_cpuidle_driver, clps711x_cpuidle_probe);
+
+MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
+MODULE_DESCRIPTION("CLPS711X CPU idle driver");
+MODULE_LICENSE("GPL");